Ripgrep

ripgrep rg is a recursive grep (or search) tool that is particularly fast.

It also observes any .gitignore automatically, making it particularly useful as a programmers grep.

Is it better? Maybe. It depends on your needs and use case. Here's a Feature comparison of ack, ag, git-grep, GNU grep and ripgrep by the author of Ack. If you have a large codebase to search, it can be very handy. (Aside: I find the author's username "BurntSushi" to be hilarious.)